WO2009098993A1 - Structure de caisse inférieure d'automobile - Google Patents

Structure de caisse inférieure d'automobile Download PDF

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Publication number
WO2009098993A1
WO2009098993A1 PCT/JP2009/051452 JP2009051452W WO2009098993A1 WO 2009098993 A1 WO2009098993 A1 WO 2009098993A1 JP 2009051452 W JP2009051452 W JP 2009051452W WO 2009098993 A1 WO2009098993 A1 WO 2009098993A1
Authority
WO
WIPO (PCT)
Prior art keywords
floor
tank bracket
seat belt
cross member
bottom wall
Prior art date
Application number
PCT/JP2009/051452
Other languages
English (en)
Japanese (ja)
Inventor
Masayuki Taguchi
Original Assignee
Toyota Shatai Kabushiki Kaisha
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Toyota Shatai Kabushiki Kaisha filed Critical Toyota Shatai Kabushiki Kaisha
Priority to CN200980100125A priority Critical patent/CN101778755A/zh
Priority to US12/672,838 priority patent/US20100327628A1/en
Priority to EP09707371A priority patent/EP2239185A4/fr
Priority to AU2009211810A priority patent/AU2009211810A1/en
Priority to CA2707385A priority patent/CA2707385A1/fr
Publication of WO2009098993A1 publication Critical patent/WO2009098993A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D25/00—Superstructure or monocoque structure sub-units; Parts or details thereof not otherwise provided for
    • B62D25/20—Floors or bottom sub-units
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K15/00—Arrangement in connection with fuel supply of combustion engines or other fuel consuming energy converters, e.g. fuel cells; Mounting or construction of fuel tanks
    • B60K15/03—Fuel tanks
    • B60K15/06—Fuel tanks characterised by fuel reserve systems
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K15/00—Arrangement in connection with fuel supply of combustion engines or other fuel consuming energy converters, e.g. fuel cells; Mounting or construction of fuel tanks
    • B60K15/03—Fuel tanks
    • B60K15/063—Arrangement of tanks
    • B60K15/067—Mounting of tanks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D25/00—Superstructure or monocoque structure sub-units; Parts or details thereof not otherwise provided for
    • B62D25/20—Floors or bottom sub-units
    • B62D25/2009—Floors or bottom sub-units in connection with other superstructure subunits
    • B62D25/2027—Floors or bottom sub-units in connection with other superstructure subunits the subunits being rear structures

Definitions

  • the present invention relates to a lower body structure of an automobile that reinforces the vicinity of a seat belt anchor installation portion on a floor at the rear of a passenger compartment.
  • a rear seat is installed on the upper surface of the floor at the rear of the passenger compartment, and a seat belt anchor for the rear seat is coupled to the floor.
  • a tank bracket for supporting a fuel tank is provided on the lower surface side corresponding to the seat belt anchor coupling position of the floor, and there is one that reinforces the seat belt anchor coupling position of the floor from the tank bracket (for example, , See Patent Document 1).
  • a three-seat rear seat S is installed on the upper surface of the floor 1 at the rear of the passenger compartment supported between the left and right lockers 6, and a fuel tank N is supported on the lower surface side of the floor 1.
  • the floor 1 has a front half 1 a that extends obliquely rearward and upward and rearward from the installation position of the rear seat S and the fuel tank N, and a rear one step higher than the floor 1.
  • Seat belt anchors 3 are bolted to the front half 1a through the gap between the rear edge of the seat cushion of the rear seat S and the lower edge of the seat back on the left and right sides in the center in the vehicle width direction.
  • Two seat belt anchors 3 are installed on one side so as to restrain the left and right occupants and the center occupant of the rear seat.
  • Reference numerals 7 and 7 in FIG. 5 denote left and right rear side members that support the left and right sides of the first half and the second half 1a and 1b of the floor 1, respectively.
  • the tank brackets 4 and 4 are provided on the lower surface of the floor 1 at the rear position of the seat belt anchor 3.
  • the tank brackets 4 and 4 have the same structure on the left and right.
  • the tank bracket 4 has a cross-sectional inverted hat shape that forms a closed cross-sectional structure with the floor 1, and includes a bottom wall 40 that extends substantially horizontally in the front-rear direction and left and right side walls 41, 41, and an upper edge corresponding to the front half 1 a Is formed in such a manner that the height dimension becomes smaller toward the front with an inclined shape with a forward downward slope.
  • the tank bracket 4 is welded with the left and right upper edge flanges 42, 42 overlapped with the lower surface of the floor 1, and the rear edge flanges 43, 43 of both side walls 41 are aligned with the lower surface of the rear half 1 b of the floor 1. It is overlapped and welded to the front surface of the rear cross member 2 extending in the direction.
  • the tank bracket 4 is provided with screw holes 48 at two positions in the front and rear of the bottom wall 40, and the fuel tank N disposed below the floor 1 is suspended in either one of the front and rear screw holes 48.
  • the rear end of the belt member 90 hung from below along the vehicle front-rear direction is bolted and supported.
  • the front end of the belt member 90 is bolted to the floor cross member 11 on the front side of the floor 1 at the rear of the passenger compartment.
  • the reason why the two screw holes 48 are provided in the tank bracket 4 is to share the tank bracket 4 even when the fuel tanks have different sizes. JP 2001-260946 A
  • the seat belt anchor 3 that restrains the occupant is subjected to a seat belt load (arrow G in FIG. 6) that pulls the seat belt anchor 3 upward. It is necessary to exert the restraining performance of the occupant by the seat belt by preventing the seat belt anchor 3 from moving forward against G.
  • the coupling between the insulating flange 43 of the tank bracket 4 and the front surface of the rear cross member 2 is the peeling direction with respect to the seat belt load G, and the front half 1a of the floor 1 and the tank bracket 4 Is also in the peeling direction, so if the seat belt load G is large, the welded joint between the joint of the tank bracket 4 to the rear cross member 2 and the joint with the front half 1a of the floor may break. 6 virtual lines). When these welded joints are broken, the seat belt anchor 3 and the front half 1a of the floor are greatly lifted obliquely upward by the seat belt load G, and the restraint performance of the occupant by the seat belt cannot be exhibited sufficiently.
  • An object of the present invention is to realize a vehicle body lower structure for an automobile that can prevent displacement and reliably restrain an occupant and can reliably support a fuel tank.
  • a rear seat is installed on the upper surface of the rear floor of the passenger compartment, and a seat belt anchor for the rear seat is coupled, and the coupling position of the seat belt anchor and a floor cloth behind the seat belt anchor are disposed on the lower surface.
  • the tank bracket In the vehicle body lower part structure in which the tank bracket for fixing the end of the belt member that suspends and supports the fuel tank arranged below the floor is installed between the members, the tank bracket has a substantially inverted hat shape in cross section, A closed cross section is formed with the floor, a rear edge flange formed on the rear end edges of both side walls of the tank bracket is joined to the front side surface of the floor cross member, and the rear end of the bottom wall of the tank bracket is The extended connecting flange is connected to the lower surface of the floor cross member, and the tank bracket A bead is formed that extends in a narrow groove shape in the width direction and opens and deforms in the front-rear direction when a seat belt load acts on the tank bracket via the floor during sudden deceleration of the vehicle (Claim 1).
  • the coupling flange extending the bottom wall is coupled to the lower surface of the floor cross member, so that the coupling force between the tank bracket and the floor cross member against the seat belt load is improved. Furthermore, when the tank bracket is pulled forward by a large seat belt load, the bead opens and deforms, and the bottom wall side extends, so the seat belt load is absorbed, so that the connection with the floor does not break, so the floor seat belt The anchor joint is hardly displaced, and a high restraint force of the occupant by the seat belt is exhibited.
  • the bead is formed at one or both of the rear end and the front / rear middle of the tank bracket (Claim 2).
  • the bead at the rear end of the tank bracket is formed along the boundary between the rear end of the bottom wall of the tank bracket and the coupling flange, and the front and rear intermediate beads of the tank bracket have a bottom wall on the tank bracket. Further, it is formed so as to extend along the side walls on both sides. By forming these beads, the seat belt load is absorbed and the connection between the floor cross member of the tank bracket and the floor is maintained.
  • the floor has an inclined surface with the front half rising upward, the latter half following the cargo compartment has a horizontal flat surface, and the seat belt anchor is connected to the upper surface of the front half, and the floor cross member is attached to the floor.
  • the tank bracket Installed on the lower surface of the second half, the tank bracket is configured so that the shape of the upper edge in the front-rear direction matches the shape of the floor in the front-rear direction, and the front part of the upper edge is a front downward slope with respect to the bottom wall,
  • the coupling flange is overlapped and fixed to the lower surface of the cross member, and the front and rear bead is formed at a position corresponding to the bent portion at the boundary between the front half and the rear half of the floor.
  • FIG. 5 An embodiment in which the present invention is applied to the floor 1 at the rear of the passenger compartment shown in FIG. 5 will be described.
  • the basic structure of the floor 1 is the same as that of the prior art.
  • the floor 1 is gently rearward and obliquely upward and rearward from the installation position of the rear seat S (FIG. 5) and the fuel tank N.
  • a first half 1a extending in a slanted surface and a horizontal flat second half 1b that is bent from the first half 1a and continues to the rear cargo compartment floor that is one step higher are formed.
  • the seat belt anchor 3 for the rear seat is bolted to the front half 1a at a low position near the front end.
  • the seat belt anchor 3 is a metal plate having a substantially L-shaped cross section, and one piece is superposed on the upper surface of the front half 1a and bolted to the coupling hole 10 of the front half 1a.
  • a webbing 30 is connected to the other upright part of the seat belt anchor 3, and a seat belt buckle (not shown) is connected via the webbing 30, and the seat belt buckle passes through a gap between the seat cushion of the rear seat and the seat back. It is arranged on the seating surface side of the seat.
  • the front half 1a has a double panel structure in which the contact plate 11 is overlapped around the coupling position of the seat belt anchor 3, and further, a reinforcing panel 12 is overlapped in the seat belt anchor 3 coupling portion to form a triple panel. Make a structure.
  • a floor cross member 2 extending in the vehicle width direction along the lower surface is provided.
  • the floor cross member 2 has a substantially inverted hat shape in cross section, and the front and rear upper edge flanges are coupled to the lower surface of the rear half 1b to form a closed cross-section structure with the rear half 1b.
  • a tank bracket 4 for the fuel tank N is provided along the lower surface of the front half 1 a and the rear half 1 b from the position immediately after the coupling portion of the seat belt anchor 3 to the floor cross member 2.
  • the tank bracket 4 is a press-molded product made of a metal plate, and is formed into a cross-section inverted hat shape having a bottom wall 40 and left and right side walls 41, 41 rising from left and right side edges. It is.
  • the upper edges of the side walls 41, 41 of the tank bracket 4 are shaped to match the shape of the floor 1 consisting of the front half 1 a of the inclined surface and the rear half 1 b of the horizontal plane. Is parallel to the bottom wall 40, and the front half has a gentle downward slope with respect to the bottom wall 40 so that the height is lowered forward.
  • Upper edge flanges 42 and 42 are formed on the upper edge so as to extend at right angles to the left and right sides over the entire length.
  • rear edge flanges 43 and 43 are formed at the rear end of the tank bracket 4 so as to project from the rear edges of the side walls 41 and 41 to the left and right sides at substantially right angles.
  • a coupling flange 44 is formed at the rear end of the tank bracket 4 so as to extend rearward so as to extend the bottom wall 40.
  • the front end of the tank bracket 4 is formed with a front-lower inclined coupling flange 47 extending forward so as to extend the bottom wall 40.
  • the tank bracket 4 is formed with a narrow groove bead 45 having a substantially U-shaped cross section in the width direction of the bottom wall 40 along the boundary line between the rear edge of the bottom wall 40 and the coupling flange 44. Further, at the front and rear intermediate portion of the tank bracket 4, at the position corresponding to the bent portion at the boundary between the front half 1a and the rear half 1b of the floor 1, the bottom wall 40 is crossed in the width direction, and the side walls 41, 41 are directed upward. A bead 46 extending in the same direction as the bead 45 is formed. The width and depth of both beads 45, 46 are set to 3 mm to 5 mm.
  • the tank bracket 4 is provided with screw holes 48, 48 for bolting the rear end of the belt member 90 that suspends and supports the fuel tank N at the front and rear positions of the bottom wall 40.
  • the two are provided so that either one can be selected according to the size of the fuel tank N to be suspended.
  • the tank bracket 4 configured as described above has upper edge flanges 42 and 42 welded to the lower surface of the floor 1, rear edge flanges 43 and 43 welded to the front side surface 21 of the floor cross member 2, and a coupling flange 44. Are attached to the vehicle body by being welded to the lower surface 20 of the floor cross member 2 and welding the front coupling flange 47 to the lower surface of the floor.
  • the fuel tank N is bolted to one of the screw holes 48 formed in the bottom wall 40 of the tank bracket 4 at the rear end (the front side hole in the illustrated example), and the front cross is a floor cloth located forward of the inclined surface of the floor 1. It is supported by the belt member 90 bolted to the member 11 (FIG. 5).
  • the seat belt load G (the white arrow in FIG. 1) from the seat belt restraining the occupant of the rear seat passes to the front half 1a of the floor 1 and the tank bracket 4 via the seat belt anchor 3. These act in the direction of pulling them upward and obliquely upward.
  • the tank bracket 4 Due to the forward component of the seat belt load G, the tank bracket 4 has a rear edge flange 43, 43 and the floor cross member 2, and the upper edge flange 42, 42 and the front half 1 a of the floor 1 are connected to these parts. A force acts to break the
  • the coupling flange 44 extending horizontally to the rear of the bottom wall 40 is provided, and this is superimposed on the lower surface of the floor cross member 2. Since welding is performed, the joint between the joint flange 44 and the lower surface of the floor cross member 2 is in a shear direction with respect to the front component of the seat belt load G, and the joint between the rear end of the tank bracket 4 and the floor cross member 2 is strengthened.
  • both the beads 45 and 46 are front and rear. By opening in the direction, the energy of the seat belt load G can be absorbed and the seat belt load G can be reduced. Thereby, the burden of the joint part between the tank bracket 4 and the floor 1 side is reduced, and breakage is prevented.
  • the beads 45 and 46 may be only one of them according to the depth or the plate thickness of the tank bracket 4, or another bead may be added. For forming the beads 45 and 46, the rear end of the bottom wall 40 where stress is easily concentrated by the seat belt load G and the position corresponding to the bent portion of the floor are effective.
  • the joint between the tank bracket 4 and the floor cross member 2 is strengthened and the effect of reducing the seat belt load G by the beads 45 and 46 of the tank bracket is combined. 4 and the floor cross member 2 are effectively prevented from being broken, and further, the joint between the tank bracket 4 and the front half 1a of the floor 1 is effectively prevented from being broken.
  • the forward movement of the seat belt anchor 3 coupling portion can be suppressed, and the restraint performance of the seat belt can be reliably exhibited. Further, since the tank bracket 4 is not broken with respect to the floor 1 and the floor cross member 2, the fuel tank support performance is ensured stably.
  • the present invention is applied to the tank bracket provided on the lower surface of the floor 1 at the rear part of the passenger compartment, which is composed of the inclined front half part 1a and the horizontal rear half part 1b.
  • the tank bracket has a hat-shaped cross section, the height dimension is uniform in the front and rear, the rear end has a rear edge flange and a coupling flange, and a width-direction bead is provided so that the front end opening is closed.
  • Tank brackets are used. In this case as well, it is possible to prevent the joint between the tank bracket and the floor cross member and the joint between the tank bracket and the floor from breaking with respect to the seat belt load, thereby preventing the movement of the seat belt anchor.
  • FIG. 6 is a cross-sectional view showing a lower body structure of the present invention at a position along line TT in FIG. 5. It is the principal part bottom view which looked at the lower body structure of the present invention from the lower part.
  • FIG. 3 is a sectional view taken along line III-III in FIG. 1.
  • FIG. 4 is a sectional view taken along line IV-IV in FIG. 1. It is a schematic plan view which shows the floor of a vehicle interior rear part.
  • FIG. 6 is a cross-sectional view showing a conventional lower body structure at a position along the line TT in FIG.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Body Structure For Vehicles (AREA)
  • Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)

Abstract

L'invention concerne une structure de caisse inférieure d'automobile, qui résiste fortement à la charge d'une ceinture de sécurité (G) qui provient d'un ancrage de ceinture de sécurité (3) fixé sur le plancher (1) d'une partie arrière d'habitacle. Une patte de fixation de réservoir (4) destinée à soutenir un réservoir à essence (N) est disposée sur la face inférieure du plancher (1) de la partie arrière d'habitacle, sur laquelle est fixé l'ancrage de ceinture de sécurité (3). La patte de fixation de réservoir (4) qui possède, une section sensiblement en forme de chapeau inversé, forme une section fermée avec le plancher (1). A l'extrémité arrière, la bride arrière (43) d'une paroi latérale (41) est reliée à la face avant d'un élément transversal du plancher (2), et une bride d'assemblage (44) qui s'étend depuis l'extrémité arrière d'une paroi inférieure (40) est reliée à la face inférieure de l'élément transversal du plancher (2), afin d'améliorer la force de liaison à l'élément transversal du plancher (2). Dans la patte de fixation (4), des nervures (45 et 46) sont formées afin de s'étendre dans le sens de la largeur de la patte de fixation (4), et se déforment afin de s'ouvrir longitudinalement par rapport à la charge de la ceinture de sécurité (G) lorsque le véhicule freine brutalement, de façon à absorber la charge (G), afin que la partie du plancher (1) reliée à l'ancrage de la ceinture de sécurité (3) ne soit pas déplacée par la charge (G).
PCT/JP2009/051452 2008-02-08 2009-01-29 Structure de caisse inférieure d'automobile WO2009098993A1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
CN200980100125A CN101778755A (zh) 2008-02-08 2009-01-29 汽车的车体下部构造
US12/672,838 US20100327628A1 (en) 2008-02-08 2009-01-29 Lower-body structure for automobile
EP09707371A EP2239185A4 (fr) 2008-02-08 2009-01-29 Structure de caisse inférieure d'automobile
AU2009211810A AU2009211810A1 (en) 2008-02-08 2009-01-29 Lower-body structure for automobile
CA2707385A CA2707385A1 (fr) 2008-02-08 2009-01-29 Structure de caisse inferieure d'automobile

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2008028397A JP2009184590A (ja) 2008-02-08 2008-02-08 自動車の車体下部構造
JP2008-028397 2008-02-08

Publications (1)

Publication Number Publication Date
WO2009098993A1 true WO2009098993A1 (fr) 2009-08-13

Family

ID=40952069

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2009/051452 WO2009098993A1 (fr) 2008-02-08 2009-01-29 Structure de caisse inférieure d'automobile

Country Status (7)

Country Link
US (1) US20100327628A1 (fr)
EP (1) EP2239185A4 (fr)
JP (1) JP2009184590A (fr)
CN (1) CN101778755A (fr)
AU (1) AU2009211810A1 (fr)
CA (1) CA2707385A1 (fr)
WO (1) WO2009098993A1 (fr)

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WO2012010775A1 (fr) * 2010-07-23 2012-01-26 Renault S.A.S. Chassis avec caisson de rehausse pour ancrage de sieges passagers
CN106585734A (zh) * 2015-10-20 2017-04-26 本田技研工业株式会社 车身后部构造

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JP5493898B2 (ja) * 2010-01-18 2014-05-14 マツダ株式会社 車両のシート取付構造
JP5893257B2 (ja) * 2011-03-30 2016-03-23 ダイハツ工業株式会社 車両の車体側部構造
JP5797517B2 (ja) * 2011-10-05 2015-10-21 日野自動車株式会社 車体フレーム連結部材、及び車体フレーム構造
JP5861490B2 (ja) 2012-02-17 2016-02-16 スズキ株式会社 車体後部構造
JP5728524B2 (ja) * 2013-04-17 2015-06-03 本田技研工業株式会社 車体構造
JP6211308B2 (ja) * 2013-05-31 2017-10-11 本田技研工業株式会社 車両用燃料供給装置
KR101490923B1 (ko) * 2013-08-09 2015-02-06 현대자동차 주식회사 리어 사이드 멤버를 구비한 차체
KR101817022B1 (ko) 2013-10-09 2018-01-09 신닛테츠스미킨 카부시키카이샤 자동차 차체용 구조 부재
JP6688479B2 (ja) * 2016-03-07 2020-04-28 いすゞ自動車株式会社 キャブのフロアパネル構造
JP7102874B2 (ja) * 2018-04-03 2022-07-20 スズキ株式会社 車体後部構造
JP2021030966A (ja) * 2019-08-28 2021-03-01 本田技研工業株式会社 排気流路構造
JP2023159935A (ja) * 2022-04-21 2023-11-02 トヨタ自動車株式会社 シートベルトアンカ取付部構造
FR3144066A1 (fr) * 2022-12-21 2024-06-28 Renault S.A.S Châssis pour un véhicule comprenant un réservoir

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WO2012010775A1 (fr) * 2010-07-23 2012-01-26 Renault S.A.S. Chassis avec caisson de rehausse pour ancrage de sieges passagers
FR2962968A1 (fr) * 2010-07-23 2012-01-27 Renault Sa Chassis avec caisson de rehausse pour ancrage de sieges passagers
US8783761B2 (en) 2010-07-23 2014-07-22 Renault S.A.S. Chassis with raising box structure to anchor passenger seats
CN106585734A (zh) * 2015-10-20 2017-04-26 本田技研工业株式会社 车身后部构造

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CA2707385A1 (fr) 2009-08-13
AU2009211810A1 (en) 2009-08-13
EP2239185A4 (fr) 2011-05-04
CN101778755A (zh) 2010-07-14
JP2009184590A (ja) 2009-08-20
US20100327628A1 (en) 2010-12-30

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